v4 vs v6 issue with facebook

Trent Lloyd lathiat at bur.st
Thu Jun 14 10:42:27 CEST 2012


This is not isolated to IPv4 and IPv6.  Facebook quite clearly appear to push data around their networks asynchronously.  I very often see for example receiving a push notification to my phone, yet, the content is not available on the website or app for at least quite a few minutes.  And sometimes it will be present in the app, but not the website, etc.

2 hours does however, seem a bit extreme.


On 14/06/2012, at 3:20 PM, Brian E Carpenter wrote:

> Having resolved to avoid social networks as long as humanly possible,
> I have no experience with FB, but this sounds like desynchronization
> within some sort of replicated storage system, or like a CDN where
> only some sites are dual-stacked. It's an interesting point and it might
> need to be mentioned in draft-ietf-v6ops-icp-guidance, if that is
> the explanation.
> Regards
>   Brian Carpenter
> On 2012-06-14 07:49, Roger Jørgensen wrote:
>> I know I'm not the only one that have seen this but anyway here we go, a
>> morning rant.
>> (The setup at home is IPv4/IPv6 on the same LAN, any device get both if
>> they support both)
>> First off, it's really really great that facebook have enabled A and AAAA
>> on their primary hostname, excellent :-)
>> A while back I started to notice that www.facebook.com and
>> www.v6.facebook.com had a delay. I could do an update on either side and
>> it took a while (some hours) before it was seen on the "other" side. Same
>> seen both from windows and mac, different browsers and different IPv4
>> and/or IPv6 network, it's related to the IPv4 and IPv6 itself.
>> After 6.June, or in reality a few days earlier, when Facebook introduced
>> AAAA on www.facebook.com I started to notice the same delay, my wife
>> confirmed it a few days ago by complaining about not updated comments on a
>> picture we both have commented on and know who have said what on. Seems
>> like the ticket is desynched to from the comments, we both see the notice
>> about a comment but can't find it anywhere on the above mention picture.
>> Earlier today (GMT+1 time) I did a few comments from home over v6, now, 2
>> hours later I can still not see them over v4...
>> ...

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